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Description

General part information

MAX1719 Series

The ultra-small MAX1719/MAX1720/MAX1721 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.5V to +5.5V. The MAX1720 operates at 12kHz, and the MAX1719/MAX1721 operate at 125kHz. High efficiency, small external components, and logic-controlled shutdown make these devices ideal for both battery-powered and board-level voltage conversion applications.Oscillator control circuitry and four power MOSFET switches are included on-chip. A typical MAX1719/MAX1720/MAX1721 application is generating a -5V supply from a +5V logic supply to power analog circuitry. All three parts come in a 6-pin SOT23 package and can deliver a continuous 25mA output current.For pin-compatible SOT23 switched-capacitor voltage inverters without shutdown (5-pin SOT23), see the MAX828/MAX829 and MAX870/MAX871 data sheets. For applications requiring more power, the MAX860/MAX861 deliver up to 50mA. For regulated outputs (up to -2 x VIN), refer to the MAX868. The MAX860/MAX861 and MAX868 are available in space-saving µMAX® packages.ApplicationsBattery-Powered ApplicationsGaAs PA Bias SupplyHandy-Terminals, PDAsLocal Negative Supply from a Positive SupplySmall LCD Panels

Technical Specifications

Parameters and characteristics for this part

SpecificationMAX1719EUT-T
Current - Output25 mA
Frequency - Switching (Max)200 kHz
Frequency - Switching (Min)60 kHz
FunctionRatiometric
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature (Max)85 °C
Operating Temperature (Min)-40 °C
Output ConfigurationPositive or Negative, Positive, Negative
Output TypeFixed
Package / CaseSOT-23-6
Package NameSOT-6, SOT-23-6
Synchronous RectifierNo
TopologyCharge Pump
Voltage - Input (Max)5.5 V
Voltage - Input (Min)1.5 V
Voltage - Output (Min/Fixed)-Vin, 2Vin

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